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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 2071 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 2052 | - |
dc.citation.title | IEEE TRANSACTIONS ON SIGNAL PROCESSING | - |
dc.citation.volume | 59 | - |
dc.contributor.author | Lee, Heyoung | - |
dc.contributor.author | Bien, Zeungnam | - |
dc.date.accessioned | 2023-12-22T06:11:23Z | - |
dc.date.available | 2023-12-22T06:11:23Z | - |
dc.date.created | 2013-05-31 | - |
dc.date.issued | 2011-05 | - |
dc.description.abstract | The notion of "instantaneous frequency" is utilized in processing signals with time-varying spectral content. Specifically, a variable bandwidth filter (VBF) and some related spectral analysis tools are proposed to handle a multicomponent signal whose components interact with each other in the time-frequency (TF) domain. In the analysis, a multicomponent signal is decomposed into its components by estimating local instantaneous frequencies (IFs). In order to construct the proposed filter, we define a differential operator composed of the derivative operator and a positive time-varying coefficient. An extended Fourier transform (EFT) and its functional relations are derived to exploit the newly defined differential operator and the VBF in some weighted vector spaces. Further, a heterogeneous TF distribution is constructed by a short-time EFT to utilize as a criterion for identifying whether an estimated IF is intrinsic or not and repairing a suspect estimate of IF. To confirm usefulness of the EFT and the VBF, we conduct several numerical simulations for spectral localization of an AM-FM signal and for estimation of local IFs, and then, for decomposition of a multicomponent signal into its components with their resolving powers to be compared | - |
dc.identifier.bibliographicCitation | IEEE TRANSACTIONS ON SIGNAL PROCESSING, v.59, no.5, pp.2052 - 2071 | - |
dc.identifier.doi | 10.1109/TSP.2011.2113345 | - |
dc.identifier.issn | 1053-587X | - |
dc.identifier.scopusid | 2-s2.0-79954526974 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/2917 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=79954526974 | - |
dc.identifier.wosid | 000289475800011 | - |
dc.language | 영어 | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | A Variable Bandwidth Filter for Estimation of Instantaneous Frequency and Reconstruction of Signals With Time-Varying Spectral Content | - |
dc.type | Article | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalResearchArea | Engineering | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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